基于介电方法设计了符合车载测量要求的四环电极结构土壤含水量与电导率复合传感器。分别在NaCl电导率溶液、含水土样和混合土样中进行标定试验分析,结果证实了复合传感器的可行性。通过分析混合土样中含水量和电导率与传感器输出信号之间的相关性,分别建立土壤含水量与电导率的统计预测模型。 Based on the dielectric method, a composite sensor of soil moisture content and conductivity was designed according to the requirements of on-board measurement. The calibration experiments were carried out in NaCl conductivity solution, hydrous soil sample and mixed soil sample, respectively. The results confirmed the feasibility of the composite sensor. By analyzing the correlation between water content and conductivity in mixed soil samples and sensor output signals, statistical prediction models of soil water content and conductivity were established respectively.